Magnetic Field Effects on the 1083 nm Atomic Line of Helium. Optical Pumping of Helium and Optical Polarisation Measurement in High Magnetic Field

E. Courtade, F. Marion, P. -J. Nacher +3

The structure of the excited $2^3$S and $2^3$P triplet states of ${}^3$He and ${}^4$He in an applied magnetic field B is studied using different approximations of the atomic Ha…